when a ball is droped from a certain height of a building reaches the graph after 3s find the velocity with which Strick the ground?
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Answered by
2
As we know,
v=u+at
As the ball is falling downward the a will become g i.e.,acceleration due to gravity
So,
V = 0 + 9.8 × 3 (u = 0 because speed of ball was 0 before dropped)
V = 0 + 29.4
Hence
V = 29.4m/s
v=u+at
As the ball is falling downward the a will become g i.e.,acceleration due to gravity
So,
V = 0 + 9.8 × 3 (u = 0 because speed of ball was 0 before dropped)
V = 0 + 29.4
Hence
V = 29.4m/s
Answered by
1
v = u+ at
u= 0
a= 10
t= 3 sec
v= 0+10×3
30m/s
u= 0
a= 10
t= 3 sec
v= 0+10×3
30m/s
JayeshPakhrani1:
Its wrong Because a is 9.8m/s
i have take acceleration due to gravity as 10. so my answer is 30.
tq frndz
i got idea because of u people
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